Adjective

1. represented simply
2. sketchy, incomplete
   • 1902, William James, Varieties of Religious Experience,

     Dr. Starbuck gives an interesting, and it seems to me a true, account -- so far as conceptions so schematic can claim truth at all...

3. relating to a schema

Noun

1. a drawing or sketch showing how a system works. [see "diagram"]

   I'll have to study the schematics for the new circuit board.